Engineering work is taking place overnight between Alexadra Palace and Stevenage via Welwyn Garden City, closing some lines.
From approximately 23:55 on Monday to Thursday evenings until 05:10 on Tuesday to Friday mornings, buses will replace trains between Alexandra Palace and Welwyn Garden City / Stevenage.
Trains between London stations and Cambridge / Peterborough will divert direct via Hertford North.
Check before you travel:
You can plan your journey using the National Rail Enquiries Journey Planner
Replacement Bus Travel Advice:
For helpful advice if you need to travel on a rail replacement service, including accessibility information, please use our travel information pages.
You can find the location of your replacement bus by checking station signs or by searching for your station on our station information pages.
Please be advised that replacement vehicles may be busier than usual, and you should allow extra time for your journey.